gas/config/tc-sparc.h

   1 /* tc-sparc.h - Macros and type defines for the sparc.
   2    Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   3    1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
   4
   5    This file is part of GAS, the GNU Assembler.
   6
   7    GAS is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2,
  10    or (at your option) any later version.
  11
  12    GAS is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  15    the GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public
  18    License along with GAS; see the file COPYING.  If not, write
  19    to the Free Software Foundation, 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef TC_SPARC
  23 #define TC_SPARC 1
  24
  25 #ifdef ANSI_PROTOTYPES
  26 struct frag;
  27 #endif
  28
  29 /* This is used to set the default value for `target_big_endian'.  */
  30 #define TARGET_BYTES_BIG_ENDIAN 1
  31
  32 #define LOCAL_LABELS_FB 1
  33
  34 #define TARGET_ARCH bfd_arch_sparc
  35
  36 extern const char *sparc_target_format PARAMS ((void));
  37 #define TARGET_FORMAT sparc_target_format ()
  38
  39 #define RELOC_EXPANSION_POSSIBLE
  40 #define MAX_RELOC_EXPANSION 2
  41
  42 #if 0
  43 #ifdef TE_SPARCAOUT
  44 /* Bi-endian support may eventually be unconditional, but until things are
  45    working well it's only provided for targets that need it.  */
  46 #define SPARC_BIENDIAN
  47 #endif
  48 #endif
  49 /* Make it unconditional and check if -EL is valid after option parsing */
  50 #define SPARC_BIENDIAN
  51
  52 #define WORKING_DOT_WORD
  53
  54 #define md_convert_frag(b,s,f) \
  55   as_fatal (_("sparc convert_frag\n"))
  56 #define md_estimate_size_before_relax(f,s) \
  57   (as_fatal (_("estimate_size_before_relax called")), 1)
  58
  59 #define LISTING_HEADER "SPARC GAS "
  60
  61 extern int sparc_pic_code;
  62
  63 /* We require .word, et. al., to be aligned correctly.  */
  64 #define md_cons_align(nbytes) sparc_cons_align (nbytes)
  65 extern void sparc_cons_align PARAMS ((int));
  66
  67 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
  68 extern void sparc_handle_align PARAMS ((struct frag *));
  69
  70 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)
  71
  72 /* I know that "call 0" fails in sparc-coff if this doesn't return 1.  I
  73    don't know about other relocation types, or other formats, yet.  */
  74 #ifdef OBJ_COFF
  75 #define TC_FORCE_RELOCATION_ABS(FIX)            \
  76   ((FIX)->fx_r_type == BFD_RELOC_32_PCREL_S2    \
  77    || TC_FORCE_RELOCATION (FIX))
  78
  79 #define RELOC_REQUIRES_SYMBOL
  80 #endif
  81
  82 #ifdef OBJ_AOUT
  83 /* This expression evaluates to true if the relocation is for a local
  84    object for which we still want to do the relocation at runtime.
  85    False if we are willing to perform this relocation while building
  86    the .o file.  */
  87
  88 #define TC_FORCE_RELOCATION_LOCAL(FIX)          \
  89   (!(FIX)->fx_pcrel                             \
  90    || (FIX)->fx_plt                             \
  91    || (sparc_pic_code                           \
  92        && S_IS_EXTERNAL ((FIX)->fx_addsy))      \
  93    || TC_FORCE_RELOCATION (FIX))
  94 #endif
  95
  96 #ifdef OBJ_ELF
  97 /* Don't turn certain relocs into relocations against sections.  This
  98    is required for the dynamic linker to operate properly.  When
  99    generating PIC, we need to keep any non PC relative reloc.  The PIC
 100    part of this test must be parallel to the code in tc_gen_reloc which
 101    converts relocations to GOT relocations.  */
 102 #define tc_fix_adjustable(FIX)                                          \
 103   ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT                         \
 104    && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY                        \
 105    && (! sparc_pic_code                                                 \
 106        || ((FIX)->fx_r_type != BFD_RELOC_HI22                           \
 107            && (FIX)->fx_r_type != BFD_RELOC_LO10                        \
 108            && (FIX)->fx_r_type != BFD_RELOC_SPARC13                     \
 109            && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2                \
 110                || !generic_force_reloc (FIX))                           \
 111            && ((FIX)->fx_pcrel                                          \
 112                || ((FIX)->fx_subsy != NULL                              \
 113                    && (S_GET_SEGMENT ((FIX)->fx_subsy)                  \
 114                        == S_GET_SEGMENT ((FIX)->fx_addsy)))             \
 115                || S_IS_LOCAL ((FIX)->fx_addsy)))))
 116
 117 /* Values passed to md_apply_fix3 don't include the symbol value.  */
 118 #define MD_APPLY_SYM_VALUE(FIX) 0
 119
 120 /* Finish up the entire symtab.  */
 121 #define tc_adjust_symtab() sparc_adjust_symtab ()
 122 extern void sparc_adjust_symtab PARAMS ((void));
 123 #endif
 124
 125 #ifdef OBJ_AOUT
 126 /* When generating PIC code, we must not adjust any reloc which will
 127    turn into a reloc against the global offset table, nor any reloc
 128    which we will need if a symbol is overridden.  */
 129 #define tc_fix_adjustable(FIX)                                          \
 130   (! sparc_pic_code                                                     \
 131    || ((FIX)->fx_pcrel                                                  \
 132        && ((FIX)->fx_addsy == NULL                                      \
 133            || (! S_IS_EXTERNAL ((FIX)->fx_addsy)                        \
 134                && ! S_IS_WEAK ((FIX)->fx_addsy))))                      \
 135    || (FIX)->fx_r_type == BFD_RELOC_16                                  \
 136    || (FIX)->fx_r_type == BFD_RELOC_32)
 137 #endif
 138
 139 #define elf_tc_final_processing sparc_elf_final_processing
 140 extern void sparc_elf_final_processing PARAMS ((void));
 141
 142 #define md_operand(x)
 143
 144 extern void sparc_md_end PARAMS ((void));
 145 #define md_end() sparc_md_end ()
 146
 147 #endif
 148
 149 #ifdef OBJ_ELF
 150 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES)
 151 extern void sparc_cons PARAMS ((expressionS *, int));
 152 #endif
 153
 154 #define TC_CONS_FIX_NEW cons_fix_new_sparc
 155 extern void cons_fix_new_sparc
 156   PARAMS ((struct frag *, int, unsigned int, struct expressionS *));
 157
 158 #define TC_FIX_TYPE     valueT
 159
 160 #define TC_INIT_FIX_DATA(X)                     \
 161   do                                            \
 162      {                                          \
 163        (X)->tc_fix_data = 0;                    \
 164      }                                          \
 165   while (0)
 166
 167 #define TC_FIX_DATA_PRINT(FILE, FIX)                                    \
 168   do                                                                    \
 169     {                                                                   \
 170       fprintf ((FILE), "addend2=%ld\n",                                 \
 171               (unsigned long) (FIX)->tc_fix_data);                      \
 172     }                                                                   \
 173   while (0)
 174
 175 #define DWARF2_LINE_MIN_INSN_LENGTH 4
 176
 177 /* end of tc-sparc.h */